refactor(core): move doc handler to core and split API.md per app

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/app_feeder_distributor/src/handler/doc.rs

@@ -1,40 +1,10 @@
-use axum::{
-    http::{header, HeaderMap, HeaderValue, StatusCode},
-    response::IntoResponse,
-};
-
+use axum::response::IntoResponse;
 use plc_platform_core::util::response::ApiErr;
 
 pub async fn get_api_md() -> Result<impl IntoResponse, ApiErr> {
-    let content = tokio::fs::read_to_string("API.md")
-        .await
-        .map_err(|err| {
-            tracing::error!("Failed to read API.md: {}", err);
-            ApiErr::NotFound("API.md not found".to_string(), None)
-        })?;
-
-    let mut headers = HeaderMap::new();
-    headers.insert(
-        header::CONTENT_TYPE,
-        HeaderValue::from_static("text/markdown; charset=utf-8"),
-    );
-
-    Ok((StatusCode::OK, headers, content))
+    plc_platform_core::handler::doc::serve_markdown("docs/api-feeder.md").await
 }
 
 pub async fn get_readme_md() -> Result<impl IntoResponse, ApiErr> {
-    let content = tokio::fs::read_to_string("README.md")
-        .await
-        .map_err(|err| {
-            tracing::error!("Failed to read README.md: {}", err);
-            ApiErr::NotFound("README.md not found".to_string(), None)
-        })?;
-
-    let mut headers = HeaderMap::new();
-    headers.insert(
-        header::CONTENT_TYPE,
-        HeaderValue::from_static("text/markdown; charset=utf-8"),
-    );
-
-    Ok((StatusCode::OK, headers, content))
+    plc_platform_core::handler::doc::serve_markdown("README.md").await
 }

crates/app_operation_system/src/handler.rs

@@ -0,0 +1 @@
+pub mod doc;

crates/app_operation_system/src/handler/doc.rs

@@ -0,0 +1,10 @@
+use axum::response::IntoResponse;
+use plc_platform_core::util::response::ApiErr;
+
+pub async fn get_api_md() -> Result<impl IntoResponse, ApiErr> {
+    plc_platform_core::handler::doc::serve_markdown("docs/api-ops.md").await
+}
+
+pub async fn get_readme_md() -> Result<impl IntoResponse, ApiErr> {
+    plc_platform_core::handler::doc::serve_markdown("README.md").await
+}

crates/app_operation_system/src/lib.rs

@@ -1,4 +1,5 @@
 pub mod app;
+pub mod handler;
 pub mod router;
 
 pub use app::{run, test_state, AppState};

crates/plc_platform_core/src/handler.rs

@@ -1 +1,2 @@
+pub mod doc;
 pub mod log;

crates/plc_platform_core/src/handler/doc.rs

@@ -0,0 +1,23 @@
+use axum::{
+    http::{header, HeaderMap, HeaderValue, StatusCode},
+    response::IntoResponse,
+};
+
+use crate::util::response::ApiErr;
+
+pub async fn serve_markdown(path: &str) -> Result<impl IntoResponse, ApiErr> {
+    let content = tokio::fs::read_to_string(path)
+        .await
+        .map_err(|err| {
+            tracing::error!("Failed to read {}: {}", path, err);
+            ApiErr::NotFound(format!("{} not found", path), None)
+        })?;
+
+    let mut headers = HeaderMap::new();
+    headers.insert(
+        header::CONTENT_TYPE,
+        HeaderValue::from_static("text/markdown; charset=utf-8"),
+    );
+
+    Ok((StatusCode::OK, headers, content))
+}

docs/api-ops.md

@@ -0,0 +1,15 @@
+# 运转系统 API
+
+## 健康检查
+
+- `GET /api/health` — 返回应用名称和状态
+
+## 日志
+
+- `GET /api/logs` — 拉取日志内容
+- `GET /api/logs/stream` — SSE 增量推送
+
+## 文档
+
+- `GET /api/docs/api-md` — 获取 API 文档
+- `GET /api/docs/readme-md` — 获取 README